<?php
include_once 'functions.php';
$vevent = urldecode($_GET['vevent']);
$output = "BEGIN:VCALENDAR\r\n";
$output .= "PRODID: -//Google Inc//Google Calendar 70.9054//EN" . "\r\n";
$output .= "VERSION:2.0\r\n";
$output .= "METHOD:PUBLISH" . "\r\n";
$output .= $vevent;
$output .= "END:VCALENDAR\r\n";
// Get the event parameters
$entry = parse_vevent($vevent);
// Make a filename
$filename = 'iCalendar_';
if ($entry['allday']) {
if ($entry['startdate'] != $entry['enddate']) {
$filename .= $entry['startdate'] . '_' . $entry['enddate'];
} else {
$filename .= $entry['startdate'];
}
} else {
if ($entry['startdate'] != $entry['enddate']) {
$filename .= $entry['startdate'] . $entry['starttime'] . '_' . $entry['enddate'] . $entry['endtime'];
} else {
$filename .= $entry['startdate'] . '_' . $entry['starttime'] . '_' . $entry['endtime'];
}
}
$filename .= '.ics';
$filename = str_replace(":", "", $filename);
// Output the file
header('Content-Type: text/Calendar');
/**
* Load the iCalendar file from 'url' and parse all
* events that are within the range
* from <= eventdate <= from+previewSec
*
* @param url HTTP URL of an *.ics file
* @param from unix timestamp in seconds (may be null)
* @param to unix timestamp in seconds (may be null)
* @param previewDays Limit the entries to 30 days in the future
* @param numberOfEntries Number of entries to display
* @param $sort_descending
* @return an array of entries sorted by their startdate
*/
function _parseIcs($url, $from, $to, $previewDays, $numberOfEntries, $sort_descending)
{
global $conf;
$http = new DokuHTTPClient();
if (!$http->get($url)) {
$this->error = "Could not get '{$url}': " . $http->status;
return array();
}
$content = $http->resp_body;
$entries = array();
# If dateformat is set in plugin configuration ('dformat'), then use it.
# Otherwise fall back to dokuwiki's default dformat from the global /conf/dokuwiki.php.
$dateFormat = $this->getConf('dformat') ? $this->getConf('dformat') : $conf['dformat'];
//$timeFormat = $this->getConf('tformat') ? $this->getConf('tformat') : $conf['tformat'];
# regular expressions for items that we want to extract from the iCalendar file
$regex_vevent = '/BEGIN:VEVENT(.*?)END:VEVENT/s';
#split the whole content into VEVENTs
preg_match_all($regex_vevent, $content, $matches, PREG_PATTERN_ORDER);
if ($previewDays > 0) {
$previewSec = $previewDays * 24 * 3600;
} else {
$previewSec = -1;
}
// loop over VEVENTs and parse out some itmes
foreach ($matches[1] as $vevent) {
$entry = parse_vevent($vevent, $dateFormat);
// if entry is to old then filter it
if ($from && $entry['endunixdate']) {
if ($entry['endunixdate'] < $from) {
continue;
}
if ($previewSec > 0 && $entry['startunixdate'] > time() + $previewSec) {
continue;
}
}
// if entry is to new then filter it
if ($to && $entry['startunixdate']) {
if ($entry['startunixdate'] > $to) {
continue;
}
}
$entries[] = $entry;
}
if ($to && $from == null) {
// sort entries by startunixdate
usort($entries, 'compareByEndUnixDate');
} else {
if ($from) {
// sort entries by startunixdate
usort($entries, 'compareByStartUnixDate');
} else {
if ($sort_descending) {
$entries = array_reverse($entries, true);
}
}
}
// See if a maximum number of entries was set
if ($numberOfEntries > 0) {
$entries = array_slice($entries, 0, $numberOfEntries);
// Reverse array?
if ($from && $sort_descending) {
$entries = array_reverse($entries, true);
} else {
if ($to && !$from && !$sort_descending) {
$entries = array_reverse($entries, true);
}
}
}
return $entries;
}
